Support frame for round duct



FIG. 1 is a perspective view of the support frame for round duct showing my new design.

FIG. 2 is a top plan view of FIG. 1.

FIG. 3 is a front elevation view of FIG. 1.

FIG. 4 is a right side elevation view of FIG. 1; the left side being a mirror image thereof.

FIG. 5 is a rear elevation view of FIG. 1; and,

FIG. 6 is a bottom plan view of FIG. 1. 

The ornamental design for the support frame for round duct, as shown and described. 